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authorJ. Bruce Fields <bfields@redhat.com>2011-04-10 10:35:12 -0400
committerJ. Bruce Fields <bfields@redhat.com>2011-04-11 08:42:03 -0400
commitaea93397db4b39c9d15443a0e7cc9a380ba990c6 (patch)
treefe98a2b9f48b814c0d911d5ff1d700a7465f40d3 /fs
parent8985ef0b8af895c3b85a8c1b7108e0169fcbd20b (diff)
nfsd: distinguish functions of NFSD_MAY_* flags
Most of the NFSD_MAY_* flags actually request permissions, but over the years we've accreted a few that modify the behavior of the permission or open code in other ways. Distinguish the two cases a little more. In particular, allow the shortcut at the start of nfsd_permission to ignore the non-permission-requesting bits. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfsd/vfs.c2
-rw-r--r--fs/nfsd/vfs.h3
2 files changed, 4 insertions, 1 deletions
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 2e1cebde90df..a76ef7e0b3d0 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -2027,7 +2027,7 @@ nfsd_permission(struct svc_rqst *rqstp, struct svc_export *exp,
struct inode *inode = dentry->d_inode;
int err;
- if (acc == NFSD_MAY_NOP)
+ if ((acc & NFSD_MAY_MASK) == NFSD_MAY_NOP)
return 0;
#if 0
dprintk("nfsd: permission 0x%x%s%s%s%s%s%s%s mode 0%o%s%s%s\n",
diff --git a/fs/nfsd/vfs.h b/fs/nfsd/vfs.h
index 9a370a5e36b7..1036913e6e86 100644
--- a/fs/nfsd/vfs.h
+++ b/fs/nfsd/vfs.h
@@ -17,6 +17,9 @@
#define NFSD_MAY_SATTR 8
#define NFSD_MAY_TRUNC 16
#define NFSD_MAY_LOCK 32
+#define NFSD_MAY_MASK 63
+
+/* extra hints to permission and open routines: */
#define NFSD_MAY_OWNER_OVERRIDE 64
#define NFSD_MAY_LOCAL_ACCESS 128 /* IRIX doing local access check on device special file*/
#define NFSD_MAY_BYPASS_GSS_ON_ROOT 256